Tablet and pestle therefor
AssigneeKyowa Chemical Industry Co., Ltd.
InventorsHideaki Kitajima, Shiro Horie
Life of this patent
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Abstract
A tablet which comprises solid particles, especially magnesium oxide particles as the main component and has excellent shape retentivity with extremely low susceptibility to wearing and chipping. The tablet has a domed shape on each of the upper and lower horizontal surfaces of a cylindrical plate shape, wherein the domed shape on each of the upper and lower horizontal surfaces satisfies the following requirements (a), (b) and (c) in the cross-sectional shape including the center line of the cylindrical plate shape: (a) each corner has an angle of 25 to 45°, (b) each corner has a horizontal length of 0.30 to 1.0 mm, and (c) the cup has a depth of 0.6 to 1.2 mm.
Claims10
A tablet having a domed shape on upper and lower horizontal surfaces of a cylindrical plate shape, which comprises magnesium oxide particles represented by the following formula (1) as the main component,
- (Mg1-xZnx)O (1)
- wherein x is 0 to 0.3, the content of the magnesium oxide particles being 85 to 95 wt %,
- wherein:
- the domed shape has a two-stage structure consisting of a linear portion from both ends of a horizontal surface and part of a circle having a curvature R in a cross-section,
- the linear portion has an angle of 25° to 45° and a corner horizontal length of 0.3 mm to 1.0 mm,
- the part of the circle having a curvature R has a radius of from 7 mm to 25 mm, and a cup has a depth of 0.6 mm to 1.2 mm.
A tablet configured for oral administration and suitable for use as a laxative, said tablet having a domed shape on upper and lower horizontal surfaces of a cylindrical plate shape, which tablet comprises as a main component magnesium oxide particles having an average secondary particle diameter of 0.5 to 25 μm, said magnesium oxide particles being represented by formula (1)
- (Mg1-xZnx)O (1)
- wherein x is 0 to 0.3, the content of the magnesium oxide particles in said tablet being 85 to 95 wt %, wherein:
- the domed shape has a two-stage structure consisting of a linear portion from both ends of a horizontal surface and part of a circle having a curvature R in a cross-section, the length of the horizontal surface of the cross-section shape being 7 to 11 mm,
- the linear portion has an angle of 28° to 40° and a corner horizontal length of 0.35 mm to 0.85 mm,
- the part of the circle having a curvature R has a radius of from 7 mm to 25 mm, and
- a cup depth, defined as the distance from a horizontal surface of the tablet to the apex of the domed shape, has a depth of 0.65 mm to 1.1 mm.
Dependencies are inferred from the claim text.